Oil filter



April 22, 1930. B. H. CARLISLE 1,755,912

OIL FILTER Original Filed Oct. l, 1928 als :Eli-1. Carlisle u attenua/1go Patented Apr. 22, 1930 PATENT OFFICE BENJIMAN HARRISON CARLISLE, OF PETERSBURG, INDIANA OIL FILTER Application filed October 1', 19??,8, Serial No. 363,469. Renewed Ian-nary 9, 1930.

The present invention is directed to improvements in oil filters.

The primaryobject of the `invention isto provide a device of'this character constructed in such manner that it can be conveniently placed in an oil line of an automobile engine to positively separate foreign matter from the oil to prevent' passage thereof into the working parts of the engine.

Another object of the invention is to provide a device of this character so constructed that it can be easily and quickly disassembled to permit removal of sediment and cleansing of the various filtering elements. Another object of the invention is to provide a device of this kind wherein a novel form of support is employed for positively lioldingthe filtering element in spaced relationship.

Another object of the invention is to provide a device of this kind which is simple in construction, ei'iicient in operation, durable, and one which can be manufactured at a very small cost.

With these and other objects in View, this 'invention resides in the novel Jfeatures of construction, formation, combinationand arrangement of parts yto be liereinaftenmore fully described, claimed and illustrated in the accompanying drawing, in which Figure 1 is a side elevation of the device.

Figure 2 is a vertical central sectional view therethrough.

Figure 3 is a perspective view of one of the supports.

Referring to the drawing, 1 designates a casing, preferably circular in cross section, the upper end of which is formed with a conical dome 2 which communicates with the discharge pipe 3, said pipe serving to convey the filtered oil to the working parts of the engine. The casing is provided with upper and lower annular shoulders 4and 5, respectively, the purpose of which will be later eX- plained. l

A conical hollow bottom 6 is provided and has its upper edge formed with an annular fiange 7 for securementto the'flange 8 of the casing, said bottom having a pipe 9 connected therewith which leads from the oil pump,

not shown, screws 10 ai'ecai'ried by the flange l 8 in order that the same can be securely con nectedto the flange 7, as shown in Figure 2 of the drawing.

rlhe bottom 6 is provided with a nipple 10 vertical slots 15@ The yoke carries in its bight portion a clamping screw 16 which is adapted to iiiipinge against the bottom of the bowl to hold the saine firmly in place.

To attach the bowl to the head it is only necessary to hold yoke horizontally in order that the slots 15 will pass over the lugs 12, whereupon the yoke is swung to a vertical position and the bowl placed therein. The screw 16 is then manipulated to secure the bowl in position.

Filtering screens 17 and 18 of suitable mesh are employed, the former being engaged withthe shoulder 5 while the latter engages the shoulder 7. A filtering element 19 is ,provided and engages the shoulder 4, said element consisting of screens 20 and 21 having confined therebetween a fabric sheet 22, preferably of flannel.

In order to hold the element v19 engaged upon the shoulder 4 and the screen 17 upon the shoulder 5, upper and lower supports 23 are employed and consist vof rectangular frames 24 formed from suitable wire, said frames being disposed in criss-cross relation and are-secured in any approved manner at their points of intersection in order that the frames will be rigid. The upper support rests upon the screen 17 and serves to hold the element 19 engaged with the shoulder 4, while theilower support rests upon the screen 18 supported by the shoulder 7 and maintains the screen 17 engaged with the shoulder 5. In this manner the element 19, screens 17 and 18 will be maintained in proper spaced relales f @per ana me mafie-g atm 40 tionship and against movement as the oil is pumped through the lter.

A band 25 is engaged upon the casing and serves to hold the filter in place upon the automobile, this band being spot Welded to the casing.

It Will-be 'obious-thattheoilhentering the bottomG Willlde'foredupwardly'hdthrougli the ltering mediums in order that dirt,grit

or Yother foreign matterwill be extracted therefrom. F'rtli'efit Will'beapp'arent"that particles, such as metal-cuttings and grit Will gravitate from the bottom 6 into the'b'o'itil 13 throughithe nipple l0?.A Since the bowl `and Various' filtering elements are readily Sre- ,movable fthe tievce @an be -ffa any f disassemvWill also enter Athelom/l'l.

-' advantages puttin to unis@ :skilled in ther/art., withut further description, and' it Will nloe' undertli'iitvarious lin 'theE sie, shape, "antlfproportion 'and,-Iiii'n'r detailsof 2on- 'str tron, inizi-yl be iresort'edfjto "Without depart'- itl-avantages of 'the invention. 3,0 Y

the vl'easing' and the lower 'itering itl-@merit and VlfrIter'nu'e'date Vfilte'irinlg Z'ele'r'n''ents2 N4and; 'a (similar frame feng-aged ,between the inten i mediate ltering 'element and 'lwver'lilteiin'g i, ,vzw v. L l, 1g n vele ent, said lframes serymgito maintain the 

